Sensor for capturing a moving material web
US9743008B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 19, 2013 |
| Grant date | Aug 22, 2017 |
| Priority date | — |
| Expiry date | Oct 21, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B11/00
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A sensor (1) serves for capturing a moving material web (2). It has at least one light source (4) and at least one light detector (10). At least one polarization element (15) is provided between the two, which polarization element influences polarization properties of the light transmitted by the polarization element (15) as a function of an electric field. Markings such as for example metal strips (13) in the material web (2) can thus be captured in the light detector (10) without problem.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.